mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-24 13:05:17 +00:00
105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
/**
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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package root
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/nvcdi/spec"
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"github.com/NVIDIA/nvidia-container-toolkit/pkg/nvcdi/transform"
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"github.com/sirupsen/logrus"
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"github.com/urfave/cli/v2"
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)
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type loadSaver interface {
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Load() (spec.Interface, error)
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Save(spec.Interface) error
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}
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type command struct {
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logger *logrus.Logger
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handler loadSaver
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}
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type config struct {
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from string
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to string
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}
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// NewCommand constructs a generate-cdi command with the specified logger
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func NewCommand(logger *logrus.Logger, specHandler loadSaver) *cli.Command {
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c := command{
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logger: logger,
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handler: specHandler,
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}
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return c.build()
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}
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// build creates the CLI command
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func (m command) build() *cli.Command {
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cfg := config{}
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c := cli.Command{
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Name: "root",
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Usage: "Apply a root transform to a CDI specification",
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Before: func(c *cli.Context) error {
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return m.validateFlags(c, &cfg)
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},
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Action: func(c *cli.Context) error {
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return m.run(c, &cfg)
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},
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}
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c.Flags = []cli.Flag{
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&cli.StringFlag{
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Name: "from",
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Usage: "specify the root to be transformed",
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Destination: &cfg.from,
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},
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&cli.StringFlag{
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Name: "to",
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Usage: "specify the replacement root. If this is the same as the from root, the transform is a no-op.",
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Value: "",
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Destination: &cfg.to,
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},
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}
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return &c
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}
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func (m command) validateFlags(c *cli.Context, cfg *config) error {
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return nil
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}
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func (m command) run(c *cli.Context, cfg *config) error {
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spec, err := m.handler.Load()
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if err != nil {
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return fmt.Errorf("failed to load CDI specification: %w", err)
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}
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err = transform.NewRootTransformer(
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cfg.from,
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cfg.to,
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).Transform(spec.Raw())
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if err != nil {
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return fmt.Errorf("failed to transform CDI specification: %w", err)
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}
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return m.handler.Save(spec)
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}
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